Open the brackets. Choose the most suitable of all the Progressive Tenses. Give reasons for your choice.

1. What you (do) here so late? You always (do) your lessons in the reading room? 2. You didn't see me, I (sit) in the back row. 3. I can give her your message, I (see) her at the lecture. 4. Why you always (change) your mind? 5. He asks me who else (come) to the party. 6. It (rain) when I first came to St. Petersburg. 7. We (play) chess for an hour and went for a walk. 8. We (play) chess when you like. 9. I (read) for my examination. 10. Well, so long then, I'll phone you one of these days. 11. We'll come at 12 a. m. 12. They (rehearse) the second act. 13. He (lose) constantly things! 14. Sorry, I really have to go. They (wait) for me. 15. What you (do) after dinner?

1. What are you (doing) here so late? Are you always (do ing) your lessons in the reading room? 2. You didn't see me, I (was sitt ing) in the back row. 3. I can give her your message, I (will be see ing) her at the lecture. 4. Why are you always (chang ing) your mind? 5. He asks me who else (is com ing) to the party. 6. It (was rain ing) when I first came to St. Petersburg. 7. We (had been play ing) chess for an hour and went for a walk. 8. We (will be play ing) chess when you like. 9. I (am read ing) for my examination. 10. Well, so long then, I'll phone you one of these days. 11. We'll come at 12 a. m. 12. They (are rehears ing) the second act. 13. He is constantly (los ing) things! 14. Sorry, I really have to go. They (are waiting) for me. 15. What you (are doing) after dinner?